Astros vs Mariners Picks and Prediction – 4/9/2025

On Tuesday, the Houston Astros (3-5) face off against the Seattle Mariners (3-6) at T-Mobile Park in Seattle, Washington. Keep up to date with all the MLB action, with our expert MLB picks.

Seattle comes into this matchup on a two-game losing streak and has dropped four of their last five games prior to their series finale against San Francisco and series opener against Houston. In Saturday's 4-1 defeat by San Francisco, Dylan Moore stood out for the Mariners by going 2-for-4, hitting a home run, scoring a run, and notching an RBI. This season, the power hitters for Seattle include Randy Arozarena, Jorge Polanco, Dylan Moore, and Julio Rodriguez, each with two home runs. Trailing them are Cal Raleigh and Luke Raley, who have each hit one home run to date. Jorge Polanco is also leading the team in RBIs, with a total of eight. Meanwhile, Victor Robles boasts the highest batting average on the team, hitting .256. Over the last five games, Seattle's defense has struggled, allowing an average of 5.8 runs per game. They aim to address these issues before facing the Astros in their divisional matchup. Last season, Seattle averaged 4.2 runs per game.

Houston enters this game on a one-game losing streak and has dropped four of their last five games prior to their series finale against Minnesota and series opener against Seattle. In a tough 6-1 defeat against Minnesota on Saturday, Jose Altuve stood out for the Astros by hitting 3-for-5, including a home run. He also contributed with a run scored and an RBI. So far this season, Altuve and Jeremy Pena are tied for the team lead in home runs, with each hitting two. Christian Walker follows with one home run. The team's leading RBI contributor, Yordan Alvarez, has driven in four runs this season. Altuve also boasts the highest batting average on the team at .364. Over their last five games, the Astros have struggled defensively, allowing an average of 4.8 runs per game. This slow start mirrors Seattle’s early struggles, highlighting the need for defensive improvements to avoid ongoing issues. Last season, the Astros averaged 4.6 runs per game.

Both teams are eager to build some positive momentum after experiencing comparable early-season performances. Houston has managed only three wins in their first eight games, while Seattle has secured three victories out of their initial nine matchups. Houston will rely on their starting pitcher, Framber Valdez, who currently holds a record of 1-1 with an ERA of 3.75. Meanwhile, Seattle's starting pitcher, Luis Castillo, also stands at 1-1 but with a more favorable ERA of 3.00. Final Score Prediction, Seattle Mariners win 6-1.